[unix-history] / usr / src / lib / libc / compat-43 / setregid.c

/*
 * Copyright (c) 1993 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)setregid.c	6.1 (Berkeley) %G%";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#include <errno.h>

int
setregid(rgid, egid)
	gid_t rgid, egid;
{
	static gid_t savedgid = -1;
	
	if (savedgid == -1)
		savedgid = getegid();
	/*
	 * we assume that the intent here is to be able to
	 * get back rgid priviledge. So we make sure that
	 * we will be able to do so, but do not actually
	 * set the rgid.
	 */
	if (rgid != -1 && rgid != getgid() && rgid != savedgid) {
		errno = EPERM;
		return (-1);
	}
	if (egid != -1 && setegid(egid) < 0)
		return (-1);
	return (0);
}
Commit	Line	Data
ed26b683 KM	1	/*
	2	* Copyright (c) 1993 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*/
	7
	8	#if defined(LIBC_SCCS) && !defined(lint)
	9	static char sccsid[] = "@(#)setregid.c 6.1 (Berkeley) %G%";
	10	#endif /* LIBC_SCCS and not lint */
	11
	12	#include <sys/types.h>
	13	#include <errno.h>
	14
	15	int
	16	setregid(rgid, egid)
	17	gid_t rgid, egid;
	18	{
	19	static gid_t savedgid = -1;
	20
	21	if (savedgid == -1)
	22	savedgid = getegid();
	23	/*
	24	* we assume that the intent here is to be able to
	25	* get back rgid priviledge. So we make sure that
	26	* we will be able to do so, but do not actually
	27	* set the rgid.
	28	*/
	29	if (rgid != -1 && rgid != getgid() && rgid != savedgid) {
	30	errno = EPERM;
	31	return (-1);
	32	}
	33	if (egid != -1 && setegid(egid) < 0)
	34	return (-1);
	35	return (0);
	36	}